ES123321A1 - Improvements in vacuum tubes. - Google Patents

Improvements in vacuum tubes.

Info

Publication number
ES123321A1
ES123321A1 ES123321A ES123321A ES123321A1 ES 123321 A1 ES123321 A1 ES 123321A1 ES 123321 A ES123321 A ES 123321A ES 123321 A ES123321 A ES 123321A ES 123321 A1 ES123321 A1 ES 123321A1
Authority
ES
Spain
Prior art keywords
vacuum tubes
tubes
vacuum
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
ES123321A
Other languages
Spanish (es)
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Koninklijke Philips NV
Original Assignee
Philips Gloeilampenfabrieken NV
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Philips Gloeilampenfabrieken NV filed Critical Philips Gloeilampenfabrieken NV
Priority to ES123321A priority Critical patent/ES123321A1/en
Publication of ES123321A1 publication Critical patent/ES123321A1/en
Expired legal-status Critical Current

Links

ES123321A 1931-06-23 1931-06-23 Improvements in vacuum tubes. Expired ES123321A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
ES123321A ES123321A1 (en) 1931-06-23 1931-06-23 Improvements in vacuum tubes.

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
ES123321A ES123321A1 (en) 1931-06-23 1931-06-23 Improvements in vacuum tubes.

Publications (1)

Publication Number Publication Date
ES123321A1 true ES123321A1 (en) 1931-07-16

Family

ID=65581457

Family Applications (1)

Application Number Title Priority Date Filing Date
ES123321A Expired ES123321A1 (en) 1931-06-23 1931-06-23 Improvements in vacuum tubes.

Country Status (1)

Country Link
ES (1) ES123321A1 (en)

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